CA2228028A1 - Route finding in communications networks - Google Patents
Route finding in communications networksInfo
- Publication number
- CA2228028A1 CA2228028A1 CA002228028A CA2228028A CA2228028A1 CA 2228028 A1 CA2228028 A1 CA 2228028A1 CA 002228028 A CA002228028 A CA 002228028A CA 2228028 A CA2228028 A CA 2228028A CA 2228028 A1 CA2228028 A1 CA 2228028A1
- Authority
- CA
- Canada
- Prior art keywords
- route
- signature
- finder
- node
- signatures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0062—Provisions for network management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/64—Distributing or queueing
- H04Q3/66—Traffic distributors
Abstract
A method of determining a restoration route (or an additional route) in a fully or partially meshed communications network of nodes, comprising setting, at a node which initially determines itself to be the slave end node for an existing route, a timeout for receiving a number of forward route-finder signatures from which it will select the signature representing the potential restoration route having the shortest length and return a route confirmation signature; switching, if no route-finder signatures have been received by the expiry of the timeout, to act as master end node for the existing route and send reverse route-finder signatures to its neighbouring nodes; switching, upon receipt of a reverse route-finder signature at a node which initially determines itself to be the master end node for an existing route, to act as slave end node, and send a corresponding return signature. Where a slave end node receives a backtrack signature indicating that the potential restoration route no longer has sufficient capacity, the node will switch to act as master end node. Where a forward route-finder signature is received after a node has sent a reverse route-finder signature, a priority route confirmation signature is sent. The route-finder signatures have a count field to indicate the direction of travel and the number of times that the sending node has switched to act as master end node, forward signatures have counts 1,3, etc..., and reverse signatures have counts 2,4, etc... Where a node has sent a forward route-finder signature, received a reverse route-finder signature, sent a confirmation signature, and subsequently receives a priority confirmation signature, then unless a backtrack signature is received two restoration routes will be established and the nodes will select the better one.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95305495.4 | 1995-08-07 | ||
EP95305495 | 1995-08-07 | ||
PCT/GB1996/001912 WO1997006643A1 (en) | 1995-08-07 | 1996-08-06 | Route finding in communications networks |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2228028A1 true CA2228028A1 (en) | 1997-02-20 |
CA2228028C CA2228028C (en) | 2001-10-09 |
Family
ID=8221286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002228028A Expired - Fee Related CA2228028C (en) | 1995-08-07 | 1996-08-06 | Route finding in communications networks |
Country Status (12)
Country | Link |
---|---|
US (1) | US6147966A (en) |
EP (1) | EP0843941B1 (en) |
JP (1) | JPH11510347A (en) |
KR (1) | KR19990036154A (en) |
CN (1) | CN1117488C (en) |
AU (1) | AU698097B2 (en) |
CA (1) | CA2228028C (en) |
DE (1) | DE69632786T2 (en) |
MX (1) | MX9800754A (en) |
NO (1) | NO980523D0 (en) |
NZ (1) | NZ315055A (en) |
WO (1) | WO1997006643A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6421349B1 (en) | 1997-07-11 | 2002-07-16 | Telecommunications Research Laboratories | Distributed preconfiguration of spare capacity in closed paths for network restoration |
US6377543B1 (en) | 1997-08-13 | 2002-04-23 | Telecommunications Research Laboratories | Path restoration of networks |
US6831895B1 (en) * | 1999-05-19 | 2004-12-14 | Lucent Technologies Inc. | Methods and devices for relieving congestion in hop-by-hop routed packet networks |
DE69928091D1 (en) * | 1999-07-03 | 2005-12-08 | Ericsson Telefon Ab L M | Arrangement and method for load control in a telecommunications network |
US7342873B1 (en) * | 2000-06-06 | 2008-03-11 | Lucent Technologies Inc. | Efficient architectures for protection against network failures |
US7177927B1 (en) * | 2000-08-22 | 2007-02-13 | At&T Corp. | Method for monitoring a network |
KR100390586B1 (en) * | 2001-01-15 | 2003-07-07 | 박영필 | Stack Type Piezoelectric Actuator |
JP3695362B2 (en) * | 2001-07-12 | 2005-09-14 | 日本電気株式会社 | Communication connection detour system |
US6978394B1 (en) * | 2002-02-22 | 2005-12-20 | Cisco Technology, Inc. | Linear program-based technique for placing FRR TE tunnels with bandwidth guarantee |
US7406033B2 (en) * | 2002-02-28 | 2008-07-29 | Nortel Networks Limited | Methods, devices and software for combining protection paths across a communications network |
US8199636B1 (en) * | 2002-10-18 | 2012-06-12 | Alcatel Lucent | Bridged network system with traffic resiliency upon link failure |
CN100455035C (en) * | 2003-09-02 | 2009-01-21 | 华为技术有限公司 | Routing method of forward constraint backward selecting |
US7590055B2 (en) * | 2004-02-09 | 2009-09-15 | Alcatel Lucent | High availability broadband connections through switching from wireline to diverse wireless network |
KR101337126B1 (en) * | 2005-05-12 | 2013-12-05 | 삼성전자주식회사 | Method and apparatus for achieving re-association of handover in a wireless local area network mesh network |
US7835271B2 (en) * | 2005-12-29 | 2010-11-16 | Alcatel-Lucent Usa Inc. | Signaling protocol for p-cycle restoration |
US8400912B2 (en) * | 2007-06-27 | 2013-03-19 | World Wide Packets, Inc. | Activating a tunnel upon receiving a control packet |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1291549C (en) * | 1987-11-06 | 1991-10-29 | Wayne D. Grover | Method and apparatus for self-healing and self-provisioning networks |
JPH0624366B2 (en) * | 1988-11-24 | 1994-03-30 | 日本電気株式会社 | Network failure recovery method |
JP3071007B2 (en) * | 1991-10-22 | 2000-07-31 | 富士通株式会社 | Communication network control method |
JPH05151292A (en) * | 1991-11-27 | 1993-06-18 | Fujitsu Ltd | Processing method for searching route |
DE69327423T2 (en) * | 1992-05-14 | 2000-06-08 | Alcatel Sa | Procedure for route selection in a switching network |
US5357564A (en) * | 1992-08-12 | 1994-10-18 | At&T Bell Laboratories | Intelligent call screening in a virtual communications network |
US5435003A (en) * | 1993-10-07 | 1995-07-18 | British Telecommunications Public Limited Company | Restoration in communications networks |
US5705998A (en) * | 1994-08-24 | 1998-01-06 | Siemens Aktiengesellschaft | Method for routing telecommunication calls in a network |
DE19531609A1 (en) * | 1994-09-13 | 1996-03-28 | Siemens Ag | Communications network traffic management |
US5623481A (en) * | 1995-06-07 | 1997-04-22 | Russ; Will | Automated path verification for SHN-based restoration |
WO1997006644A1 (en) * | 1995-08-07 | 1997-02-20 | British Telecommunications Public Limited Company | Route finding in communications networks |
US5805686A (en) * | 1995-12-22 | 1998-09-08 | Mci Corporation | Telephone fraud detection system |
-
1996
- 1996-08-06 CA CA002228028A patent/CA2228028C/en not_active Expired - Fee Related
- 1996-08-06 KR KR1019980700822A patent/KR19990036154A/en not_active Application Discontinuation
- 1996-08-06 CN CN96196153A patent/CN1117488C/en not_active Expired - Fee Related
- 1996-08-06 NZ NZ315055A patent/NZ315055A/en unknown
- 1996-08-06 AU AU66651/96A patent/AU698097B2/en not_active Ceased
- 1996-08-06 DE DE69632786T patent/DE69632786T2/en not_active Expired - Lifetime
- 1996-08-06 US US09/011,028 patent/US6147966A/en not_active Expired - Fee Related
- 1996-08-06 JP JP9508238A patent/JPH11510347A/en active Pending
- 1996-08-06 EP EP96926490A patent/EP0843941B1/en not_active Expired - Lifetime
- 1996-08-06 MX MX9800754A patent/MX9800754A/en active IP Right Grant
- 1996-08-06 WO PCT/GB1996/001912 patent/WO1997006643A1/en active IP Right Grant
-
1998
- 1998-02-06 NO NO980523A patent/NO980523D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN1117488C (en) | 2003-08-06 |
US6147966A (en) | 2000-11-14 |
WO1997006643A1 (en) | 1997-02-20 |
DE69632786D1 (en) | 2004-07-29 |
DE69632786T2 (en) | 2005-07-14 |
CA2228028C (en) | 2001-10-09 |
AU698097B2 (en) | 1998-10-22 |
EP0843941A1 (en) | 1998-05-27 |
MX9800754A (en) | 1998-04-30 |
JPH11510347A (en) | 1999-09-07 |
KR19990036154A (en) | 1999-05-25 |
NO980523L (en) | 1998-02-06 |
EP0843941B1 (en) | 2004-06-23 |
CN1192840A (en) | 1998-09-09 |
NO980523D0 (en) | 1998-02-06 |
NZ315055A (en) | 1998-10-28 |
AU6665196A (en) | 1997-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |